Question

If f(x) = 4 – x2 and g(x) = 6x, which expression is equivalent to (g – f)(3)

Answer 1

(g-f)(3)=g(3)-f(3)=?.....................................................

Answer 2

Answer:

23

Step-by-step explanation:

Given : $f(x)=4-x^2$

            $g(x) = 6x$

To Find: which expression is equivalent to (g – f)(3)?

Solution:

$f(x)=4-x^2$

$g(x) = 6x$

$(g-f)(x)=6x-4+x^2$

Now substitute x = 3

$(g-f)(3)=6(3)-4+(3)^2$

$(g-f)(3)=18-4+9$

$(g-f)(3)=23$

Hence the value of $(g-f)(3)$ is 23.